1. 配置IP地址
[LSW1-GigabitEthernet0/0/2]ip add 10.1.1.1 24
[LSW1-LoopBack0]ip add 1.1.1.1 32
[LSW2-GigabitEthernet0/0/1]ip add 10.1.1.2 24
[LSW2-GigabitEthernet0/0/0]ip add 10.1.2.2 24
[LSR2-LoopBack0]ip add 2.2.2.2 32
[LSW3-GigabitEthernet0/0/2]ip add 10.1.2.3 24
[LSW3-GigabitEthernet0/0/0]ip add 10.1.3.3 24
[LSR3-LoopBack0]ip add 3.3.3.3 32
[LSR4-GigabitEthernet0/0/0]ip add 10.1.3.4 24
[LSR4-LoopBack0]ip add 4.4.4.4 32
2. 配置骨干网设备的IS-IS协议的基本功能
[LSW1]isis 1
[LSW1-isis-1]network-entity 10.0000.0000.0001.00
[LSW1-GigabitEthernet0/0/2] isis enable 1
[LSW1-LoopBack0] isis enable 1
[LSW2]isis 1
[LSW2-isis-1]network-entity 10.0000.0000.0002.00
[LSW2-GigabitEthernet0/0/1]isis enable 1
[LSW2-GigabitEthernet0/0/0]isis enable 1
[LSW2-LoopBack0]isis enable 1
[LSW3]isis 1
[LSW3-isis-1]network-entity 10.0000.0000.0003.00
[LSW3-isis-1]import-route static
[LSW3-GigabitEthernet0/0/2]isis enable 1
[LSW3-GigabitEthernet0/0/0]isis enable 1
[LSW3-LoopBack0]isis enable 1
[LSR4]isis 1
[LSR4-isis-1]network-entity 10.0000.0000.0004.00
[LSR4-GigabitEthernet0/0/0]isis enable 1
[LSR4-LoopBack0]isis enable 1
3. 使能各节点全局和接口的MPLS和MPLS LDP能力
[LSW1]mpls lsr-id 1.1.1.1
[LSW1]mpls
[LSW1]mpls ldp
[LSW1-GigabitEthernet0/0/2]mpls
[LSW1-GigabitEthernet0/0/2]mpls ldp
[LSW2]mpls lsr-id 2.2.2.2
[LSW2]mpls
[LSW2]mpls ldp
[LSW2-GigabitEthernet0/0/1]mpls
[LSW2-GigabitEthernet0/0/1]mpls ldp
[LSW2-GigabitEthernet0/0/0]mpls
[LSW2-GigabitEthernet0/0/0]mpls ldp
[LSW3]mpls lsr-id 3.3.3.3
[LSW3]mpls
[LSW3]mpls ldp
[LSW3-GigabitEthernet0/0/2]mpls
[LSW3-GigabitEthernet0/0/2]mpls ldp
[LSW3-GigabitEthernet0/0/0]mpls
[LSW3-GigabitEthernet0/0/0]mpls ldp
[LSR4]mpls lsr-id 4.4.4.4
[LSR4]mpls
[LSR4]mpls ldp
[LSR4-GigabitEthernet0/0/0]mpls
[LSR4-GigabitEthernet0/0/0]mpls ldp
5. 根据LSP控制需求来配置IP前缀列表，在LSR1和LSR4上使用此IP前缀列表对用于LSP的路由进行过滤：只允许1.1.1.1/32和4.4.4.4/32来建立LSP
[LSW1]ip ip-prefix foni permit 1.1.1.1 32
[LSW1]ip ip-prefix foni permit 4.4.4.4 32
[LSW1]mpls
[LSW1-mpls]lsp-trigger ip-prefix foni
[LSR4]ip ip-prefix fone permit 1.1.1.1 32
[LSR4]ip ip-prefix fone permit 4.4.4.4 32
[LSR4]mpls
[LSR4-mpls]lsp-trigger ip-prefix fone
6. 检查配置
